FLOOR AREA (GFA) – TOWN PLANNING
A typical town plan defines GFA
to mean "the sum of the area of all floors of the building
measured from the external faces of the exterior walls, or from the
centre line of walls separating the building from any other building,
excluding an area used solely for rooftop fixed mechanical plant
and/or basement car parking". In the circumstances listed below
GFA will be calculated as detailed:
- stairwells and liftwells
should be counted as contributing to GFA once only (these components
are not considered to be floor area for subsequent levels).
- basement parking also
incorporates parking for bicycles, where such areas are designed in
accordance with the relevant Australian Standard, and can be excluded
from the GFA calculation.
- voids within an atrium design
can be excluded from the GFA provided the initial floor area of the
atrium is included.
- mezzanines are considered to
be a floor and should be included in the calculation.